a:9:{i:0;s:2:"id";i:1;s:6:"userid";i:2;s:6:"sender";i:3;s:7:"content";i:4;s:4:"type";i:5;s:4:"read";i:6;s:4:"time";s:3:"_pk";s:2:"id";s:5:"_type";a:7:{s:2:"id";s:8:"int(100)";s:6:"userid";s:12:"varchar(100)";s:6:"sender";s:12:"varchar(255)";s:7:"content";s:4:"text";s:4:"type";s:12:"varchar(255)";s:4:"read";s:11:"varchar(10)";s:4:"time";s:9:"timestamp";}}